plugins/groovy/src/org/jetbrains/plugins/groovy/mvc/projectView/FileNode.java

/*
 * Copyright 2000-2014 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jetbrains.plugins.groovy.mvc.projectView;

import com.intellij.ide.projectView.PresentationData;
import com.intellij.ide.projectView.ViewSettings;
import com.intellij.ide.projectView.impl.nodes.PsiFileNode;
import com.intellij.ide.util.treeView.AbstractTreeNode;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.util.Iconable;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.Collection;

/**
 * @author peter
 */
public class FileNode extends AbstractMvcPsiNodeDescriptor {
  public FileNode(@NotNull final Module module,
                  @NotNull final PsiFile file,
                  @Nullable final String locationMark,
                  final ViewSettings viewSettings) {
    super(module, viewSettings, new NodeId(file, locationMark), FILE);
  }

  @Override
  protected String getTestPresentationImpl(@NotNull final NodeId nodeId,
                                           @NotNull final PsiElement psiElement) {
    return "File: " + ((PsiFile)psiElement).getName();
  }

  @Override
  protected PsiFile extractPsiFromValue() {
    return (PsiFile)super.extractPsiFromValue();
  }

  @Override
  protected Collection<AbstractTreeNode> getChildrenImpl() {
    return null;
  }

  @Override
  public Comparable getTypeSortKey() {
    String extension = PsiFileNode.extension(extractPsiFromValue());
    return extension == null ? null : new PsiFileNode.ExtensionSortKey(extension);
  }

  @Override
  protected void updateImpl(final PresentationData data) {
    final PsiFile value = extractPsiFromValue();
    assert value != null;
    data.setPresentableText(value.getName());
    data.setIcon(value.getIcon(Iconable.ICON_FLAG_READ_STATUS));
  }
}